[PATCH v2 1/2] core: fdtaddr: add devfdt_get_addr_size_index_ptr function

[Johan Jonker <jbx6244@gmail.com>]

Add devfdt_get_addr_size_index_ptr function with the same
functionality as devfdt_get_addr_size_index, but instead
a return pointer is given.

Suggested-by: Michael Nazzareno Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Johan Jonker <jbx6244@gmail.com>
---
 drivers/core/fdtaddr.c |  8 ++++++++
 include/dm/fdtaddr.h   | 15 +++++++++++++++
 2 files changed, 23 insertions(+)

diff --git a/drivers/core/fdtaddr.c b/drivers/core/fdtaddr.c
index 91bcd1a2..84bb8d8b 100644
--- a/drivers/core/fdtaddr.c
+++ b/drivers/core/fdtaddr.c
@@ -122,6 +122,14 @@ fdt_addr_t devfdt_get_addr_size_index(const struct udevice *dev, int index,
 #endif
 }

+void *devfdt_get_addr_size_index_ptr(const struct udevice *dev, int index,
+                                     fdt_size_t *size)
+{
+       fdt_addr_t addr = devfdt_get_addr_size_index(dev, index, size);
+
+       return (addr == FDT_ADDR_T_NONE) ? NULL : (void *)(uintptr_t)addr;
+}
+
 fdt_addr_t devfdt_get_addr_name(const struct udevice *dev, const char *name)
 {
 #if CONFIG_IS_ENABLED(OF_CONTROL)
diff --git a/include/dm/fdtaddr.h b/include/dm/fdtaddr.h
index c9d2b27b..7fc3ea5c 100644
--- a/include/dm/fdtaddr.h
+++ b/include/dm/fdtaddr.h
@@ -119,6 +119,21 @@ void *devfdt_get_addr_index_ptr(const struct udevice *dev, int index);
 fdt_addr_t devfdt_get_addr_size_index(const struct udevice *dev, int index,
 				      fdt_size_t *size);

+/**
+ * devfdt_get_addr_size_index_ptr() - Return indexed pointer to the address of the
+ *                                    reg property of a device
+ *
+ * @dev: Pointer to a device
+ * @index: the 'reg' property can hold a list of <addr, size> pairs
+ *	   and @index is used to select which one is required
+ * @size: Pointer to size varible - this function returns the size
+ *        specified in the 'reg' property here
+ *
+ * Return: Pointer to addr, or NULL if there is no such property
+ */
+void *devfdt_get_addr_size_index_ptr(const struct udevice *dev, int index,
+				     fdt_size_t *size);
+
 /**
  * devfdt_get_addr_name() - Get the reg property of a device, indexed by name
  *
--
2.20.1